Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20S
The AirTAC Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20S is a double-acting pen-size mini cylinder with a rear adjuster screw that shortens the retract end of the stroke. On a Ø16mm bore it gives a nominal 90mm stroke with a 20mm fine-adjustable window — settable from 70 to 90mm, so you set the end position without changing hardware.
- BoreØ16 mm
- Nominal stroke90 mm
- Adjust window20 mm
- Effective range70–90 mm
- Port sizeM5×0.8
- Acting typeDouble acting
About the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20S
The AirTAC PBJ16X90-20S is a double-acting, single-rod pen-size mini cylinder featuring a 20mm adjustable stroke window. You can set the effective stroke anywhere from 70mm up to the full 90mm directly at the machine. This rear-screw tuning eliminates the need to reorder hardware for different lengths. The extend end remains fixed, so plan your layout around a retract-only adjustment.
Output force matches the standard PB series exactly, giving 100.5N push and 90.7N pull at 0.5MPa without any penalty for the adjuster. The Ø5mm stainless rod and barrel provide corrosion resistance, while a fixed TPU bumper cushions each end. For practical sizing, plan for a safe working load of about 60N, which is roughly 60% of the 0.5MPa theoretical push force to account for seal friction. This also translates to lifting about 5.1kg vertically with a 2:1 safety margin.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20S Technical Specifications
| Model | Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20S |
|---|---|
| Series | PBJ JIS pen-size adjustable-stroke cylinder |
| Bore size | Ø16 mm |
| Rod diameter | Ø5 mm |
| Nominal stroke | 90 mm |
| Adjustable window | 20 mm (70–90 mm) |
| Adjuster thread | M5×0.8 |
| Port size | M5×0.8 |
|---|---|
| Operating pressure | 0.15 – 0.7 MPa |
| Proof pressure | 1.2 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 50 – 800 mm/s |
| Cushion | Elastic bumper (both ends) |
| Max standard stroke | Up to 200 mm |
The adjuster shortens only the retract end; the extend end is fixed. Force is unchanged from the standard PB double-acting cylinder. Confirm the set position against the product label before installation.
Theoretical Output Force (Ø16mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 100.5 N | 90.7 N |
| 0.7 MPa (max) | 140.7 N | 126.9 N |
Adjusting the stroke does not change output force — these are the same values as the standard PB double-acting cylinder of the same bore. Size with a friction margin.
Model Code: Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20S
| PBJ | JIS pen-size adjustable-stroke mini-cylinder series. |
|---|---|
| 16 | Bore size in mm. |
| ×90 | Nominal stroke length in mm. |
| -20 | Adjustable-stroke window in mm (10/20/30/40/50/75/100). |
| S | Built-in magnet for magnetic-switch position sensing (omit = no magnet). |
Fixed body — no separate back-cover code. Mounting accessories: LB, FA. Related PB-family variants: PB (fixed stroke), PBD (double rod), PBR (front-mount).
Where the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20S Is Used
Changeover Fixtures
Dial in the 70-90mm retract position during product changeovers to accommodate different part heights without swapping cylinders.
Trial Stops
Set experimental end-of-stroke positions during R&D testing, locking the nut once the optimal travel distance is found.
Variable-Depth Press
Adjust insertion depth for pins or plugs on the fly, relying on the 100.5N push force at 0.5MPa for reliable actuation.
Is the Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20S the Right Cylinder?
If you need less push force, the 12mm bore variant provides 56.5N at 0.5MPa, or you can step up to a larger body if 100.5N is insufficient. Remember to re-tighten the lock nut after setting your 70-90mm range, as vibration can drift an unlocked screw. The thin Ø5mm rod is built for coaxial thrust, so add an external guide or linear bearing for off-axis loads over this 90mm stroke. Confirm your ordering essentials: 16mm bore, 90mm nominal stroke, 20mm window, S magnet, and your preferred mount.
The M5x0.8 air port handles supply for this bore. Because this model includes the S option, a built-in piston magnet works with AirTAC reed or electronic switches. The fixed TPU bumper only decelerates the last few millimeters of travel; at high speeds with heavy tooling, meter-out the exhaust or add an external shock absorber. A plain cylinder does not hold position on air loss, so use an external stop for fail-safe load holding.
Quick checklist
- ✓ Need to fine-tune the end position on site
- ✓ Retract end sits within 70–90 mm
- ✓ Force at your working pressure
- ✓ Magnet (S) for sensors?
- ✓ Access to the rear adjuster screw
- ✓ Keep the load coaxial — avoid side load
Installation & Maintenance Notes
- check Use clean air filtered to 40µm or finer.
- check Keep within 0.15 – 0.7 MPa operating pressure.
- check Set the adjuster, then re-lock the check nut.
- check The adjuster shortens the retract end only.
- check Keep the load coaxial; avoid side load on the thin rod.
- check Do not dismantle the front or back cover.
Airtac PBJ Adjustable Pen-Type Cylinder PBJ16X90-20S FAQ
The effective stroke range is 70-90mm (90mm nominal minus up to a 20mm window). Force is 100.5N push and 90.7N pull at 0.5MPa, and 140.7N push and 126.9N pull at the 0.7MPa maximum. The air port is M5x0.8.
A rear screw with an M5x0.8 thread shortens the retract end of the stroke, while the extend end remains fixed. After tuning the position, you must re-tighten the lock nut to prevent vibration drift. The built-in S magnet allows tracking with reed or electronic switches.
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Related AirTAC PBJ Pen-Size Cylinders
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